<template>
    <div>
        <!-- 面包屑导航区 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图区域 -->
        <el-card class="box-card">
            <!-- 搜索与添加区域 -->
            <el-row :gutter="20">
                <el-col :span="8">
                    <!-- 与queryInfo.query双向绑定，实现搜索功能, clearable：添加一个x，清空搜索框数据，配合clearable，重新获取数据 -->
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList"  @change="getUserList">
                        <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addUserDialog = true">添加用户</el-button>
                </el-col>
            </el-row>
            <!-- 用户列表区域 -->
            <el-table
                :data="userList"
                style="width: 100%"
                border
                stripe>
                <el-table-column type="index"></el-table-column>
                <el-table-column prop="username" label="姓名"></el-table-column>
                <el-table-column prop="email" label="邮箱"></el-table-column>
                <el-table-column prop="mobile" label="电话"></el-table-column>
                <el-table-column prop="role_name" label="角色"></el-table-column>
                <el-table-column prop="mg_state" label="状态">
                    <!-- slot-scope拿到当前行数据, 新的表示方法是 v-slot="scope" -->
                    <template slot-scope="scope">
                        <!-- {{scope.row}} 可以拿到当前行数据 -->
                        <el-switch v-model="scope.row.mg_state" @change="userStateChange(scope.row)"></el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="150px">
                    <template slot-scope="scope">
                        <!-- 修改按钮 -->
                        <el-tooltip effect="dark" content="编辑" placement="top" :enterable="false">
                            <el-button type="primary" icon="el-icon-edit" circle size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                        </el-tooltip>
                        <!-- 删除按钮 -->
                        <el-tooltip effect="dark" content="删除" placement="top" :enterable="false">
                            <el-button type="danger" icon="el-icon-delete" circle size="mini" @click="removeUserById(scop.row.id)"></el-button>
                        </el-tooltip>
                        <!-- 分配角色按钮, entrable为false表示鼠标不能进入该组件 -->
                        <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                            <el-button type="warning" icon="el-icon-setting" circle size="mini" @click="setRole(scope.row)"></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>
            <!-- 分页区域 -->
            <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[1, 2, 5, 10]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total">
            </el-pagination>
        </el-card>
        <!-- 添加用户的对话框 -->
        <el-dialog
            title="添加用户"
            :visible.sync="addUserDialog"
            width="50%"
            @close="addDialogClose">
            <!-- 内容主题区 -->
            <!-- <span>这是消息</span> -->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.passowrd"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机号" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 对话框底部按钮 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addUserDialog = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>
        <!-- 修改用户对话框 -->
        <el-dialog
            title="提示"
            :visible.sync="editDialogVisible"
            width="50%">
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
                <el-form-item label="用户名">
                    <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="editForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserForm">确 定</el-button>
            </span>
        </el-dialog>
        <!-- 分配角色对话框 -->
        <el-dialog
          title="分配角色"
          :visible.sync="setRoleDialogVisible"
          width="50%"
          @close="setRoleDialogClosed">
          <p>当前的用户: {{ userInfo.username }}</p>
          <p>当前的角色: {{ userInfo.role_name }}</p>
          <p>
            分配角色：
            <el-select v-model="selectedRoleId" placeholder="请选择">
              <el-option
                v-for="item in rolesList"
                :key="item.id"
                :label="item.roleName"
                :value="item.id">
              </el-option>
            </el-select>
          </p>
          <span slot="footer" class="dialog-footer">
            <el-button @click="setRoleDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
          </span>
        </el-dialog>
    </div>
</template>

<script>
export default {
  data () {
    // 自定义验证邮箱的规则
    // rule - 规则
    // value - 待校验的值
    // callback - 校验后的callback函数，这些可以查看Element-UI中的form组件
    const checkEmail = (rule, value, callback) => {
      // 验证邮箱的正则表达式
      const regEmail = /^[A-Za-z\d]+([-_.][A-Za-z\d]+)*@([A-Za-z\d]+[-.])+[A-Za-z\d]{2,4}$/
      if (regEmail.test(value)) {
        return callback()
      }
      return callback(new Error('请输入合法的邮箱'))
    }
    // 自定义验证手机号的规则
    const checkMobile = (rule, value, callback) => {
      // 验证手机号的正则表达式
      const regMobile = /^[1][3,4,5,7,8][0-9]{9}$/
      if (regMobile.test(value)) {
        return callback()
      }
      return callback(new Error('请输入合法手机号'))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 5
      },
      userList: [],
      total: 0,
      addUserDialog: false, // 控制添加用户对话框的显示与隐藏
      // 添加用户数据的form
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { require: true, min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { require: true, min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 修改用户对话框
      editDialogVisible: false,
      // 修改界面的用户数据
      editForm: {},
      // 修改表单的验证规则
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 当前用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已选中的角色id值
      selectedRoleId: ''
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    async getUserList () {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败')
      }
      this.userList = res.data.users
      this.total = res.data.total
      console.log(res)
    },
    // 监听 pagesize 改变的事件
    handleSizeChange (newSize) {
      console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听 页码值 改变的事件
    handleCurrentChange (newPage) {
      console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 用户状态改变
    async userStateChange (userInfo) {
      console.log(userInfo)
      const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state
        // this.$message.error(res.meta.msg)
        return this.$message.error('更新用户状态失败')
      }
      return this.$message.success('更新用户状态成功')
    },
    handleClose () {
      // 对话框关闭前自动调用的函数
    },
    addDialogClose () {
      this.$refs.addFormRef.resetFields()
    },
    addUser () {
      // 添加用户
      this.$refs.addFormRef.validate(async valid => {
        // 校验用户，打印校验结果
        console.log(valid)
        if (!valid) {
          return
        }
        // 发起添加用户请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败')
          this.addUserDialog = false
        }
        this.$message.success('添加用户成功')
        this.addUserDialog = false
        this.getUserList()
      })
    },
    // 弹出修改对话框
    async showEditDialog (id) {
      // console.log(id)
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户数据错误')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 预验证修改表单
    editUserForm () {
      this.$refs.editFormRef.validate(async valid => {
        console.log(valid)
        if (!valid) {
          return
        }
        // 验证通过发起修改用户信息的请求
        const { data: res } = await this.$http.put('users/' + this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        if (res.meta.status !== 201) {
          return this.$message.error('修改用户信息失败')
        }
        this.editDialogVisible = false
        this.getUserList()
        this.$message.success('更新用户信息成功')
      })
    },
    // 根据传入的id删除用户
    async removeUserById (id) {
      // console.log(id)
      // 弹框询问是否永久删除该用户
    //   const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
    //     confirmButtonText: '确定',
    //     cancelButtonText: '取消',
    //     type: 'warning'
    //   }).then(() => {
    //     // 点击确认进入
    //     this.$message.error(`已删除用户: ${id}`)
    //     const { data: res } = this.$http.delete('users/' + id)
    //     if (res.meta.status !== 200) {
    //       return this.$message.error('删除失败')
    //     }
    //     this.editDialogVisible = false
    //     return this.$message.error('已删除用户: ' + id)
    //   }).catch(error => {
    //     // 点击取消进入
    //     this.editDialogVisible = false
    //     this.$message.success('已取消删除')
    //   })
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(error => error)
      console.log(confirmResult)
      if (confirmResult !== 'confirmResult') {
        console.log(confirmResult)
        return this.$message.success('取消删除用户')
      }
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败')
      }
      return this.$message.success('删除用户成功')
    },
    // 分配角色
    async setRole (userInfo) {
      this.selectedRoleId = ''
      this.userInfo = userInfo
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }
      this.rolesList = res.data
      this.setRoleDialogVisible = true
    },
    // 保存分配角色信息
    async saveRoleInfo () {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色')
      }
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg)
      }
      this.$message.success('更新角色成功!')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    setRoleDialogClosed () {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scoped>
.el-breadcrumb {
  margin-bottom: 15px;
  font-size: 12px;
}
.el-card {
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.15) !important;
}
// .el-row {
//   height: 80px;
//   .el-col {
//     height: 80px;
//   }
// }
.el-table {
  margin-top: 15px;
  font-size: 12px;
}
.el-pagination {
  margin-top: 15px;
}
</style>
